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Author: undingen

src/runtime/long.cpp

@@ -220,14 +220,15 @@ extern "C" PyObject* PyLong_FromString(const char* str, char** pend, int base) n
         if (i >= 0 && i <= 9)
             valid_chars.push_back('0' + i);
         if (i >= 10) {
-            valid_chars.push_back('a' + i);
-            valid_chars.push_back('A' + i);
+            valid_chars.push_back('a' + i - 10);
+            valid_chars.push_back('A' + i - 10);
         }
     }
 
-    auto last = llvm::StringRef(str).find_first_not_of(valid_chars);
-    std::string without_invalid(str);
-    without_invalid.erase(last, without_invalid.npos);
+    llvm::StringRef str_ref = str;
+    str_ref = str_ref.substr(0, str_ref.find_first_not_of(valid_chars));
+
+    std::string without_invalid = str_ref.str();
 
     r = mpz_init_set_str(rtn->n, without_invalid.c_str(), base);